diff mbox series

[v7,6/7] doc: rng: Add documentation for the rng command

Message ID 20220720122926.415659-7-sughosh.ganu@linaro.org
State Superseded
Headers show
Series tpm: rng: Move TPM RNG functionality to driver model | expand

Commit Message

Sughosh Ganu July 20, 2022, 12:29 p.m. UTC 
Add a usage document for the 'rng' u-boot command.

Signed-off-by: Sughosh Ganu <sughosh.ganu@linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
Changes since V6: None

 doc/usage/cmd/rng.rst | 26 ++++++++++++++++++++++++++
 doc/usage/index.rst   |  1 +
 2 files changed, 27 insertions(+)
 create mode 100644 doc/usage/cmd/rng.rst
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Patch

diff --git a/doc/usage/cmd/rng.rst b/doc/usage/cmd/rng.rst
new file mode 100644
index 0000000000..1a352da41a
--- /dev/null
+++ b/doc/usage/cmd/rng.rst
@@ -0,0 +1,26 @@ 
+.. SPDX-License-Identifier: GPL-2.0+
+
+rng command
+===========
+
+Synopsis
+--------
+
+::
+
+    rng [devnum [n]]
+
+Description
+-----------
+
+The *rng* command reads the random number generator(RNG) device and
+prints the random bytes read on the console. A maximum of 64 bytes can
+be read in one invocation of the command.
+
+devnum
+    The RNG device from which the random bytes are to be
+    read. Defaults to 0.
+
+n
+    Number of random bytes to be read and displayed on the
+    console. Default value is 0x40. Max value is 0x40.
diff --git a/doc/usage/index.rst b/doc/usage/index.rst
index 8b98629d6b..366c8bb4b0 100644
--- a/doc/usage/index.rst
+++ b/doc/usage/index.rst
@@ -55,6 +55,7 @@  Shell commands
    cmd/pstore
    cmd/qfw
    cmd/reset
+   cmd/rng
    cmd/sbi
    cmd/sf
    cmd/scp03